Air-conditioning appliance for precooling rooms



C. A. MOORE June 10, 1930.

AIR CONDITIONING APPLIANCE FOR PRECOOLING ROOMS Filed April 2, 1927 2 Sheets-Sheet 1 Q/ Q om a w w k1 w mm \i ii W .1 ,T 1- 1 1 L N \E NNN'N glwumlfoz Charles A. Moore June 10, 1930. Q MOORE 1,762,521

AIR CONDITIONING APPLIANCE FOR'PRECOOLING ROOMS Filed April 2, 1927 2 Sheets-Sheet 2 6 perishable produce and for Patented June 10, 1930 CHARLES A. MOORE, F EDINA, MINNESOTA AIR-CONDITIONING APPLIANCE FOR PBECOOLING ROOMS Application filed April 2,

My invention relates to improvements in appliances for conditioning the air in precooling and other refrigerating rooms.

In a chamber employed for .pre-cooling properly maintaining such produce in refrigerated condition, it is desirable not only refrigerate .the air in the chamber economically, but also to circulate the refrigerated air and ventilate the chamber, whereby the produce is properly conditioned and thus maintained under refrigeration in minimum degree.

An object of the invention is to provide simple means adapted to be associated with 1 a storage chamber at relatively small cost and to eti'ect a uniform circulation of refrigerated air within the chamber with or without ventilating the same.

Another object of theinvention is to [no vide for circulating air within a chamber and refrigerating such air by washing the same in a chilled fluid.

A further object is to provide an appliance for ventilating a room or chamber and circulating the air therein, whereby the recirculating air and the incoming fresh air is passed by washed and refrigerated in contacting with such fluid.

Au addition-a1 object is to supply an appliance, as above, wherein the fluid is chilled by means of refrigerating coils disposed in the paths of rising bubbles of air, whereby a maximum cooling effect on the air is provided.

IVith the fore oin'g and other ob'ects in view, which will appear in the following description, the invention resides in' the novel combination and arrangement of parts and in the details of construction hereinafter described and claimed.

In the drawings, Fig. 1 is a longitudinal central sectional view of illustrating an embodiment of my invention asstwinted therewith, Fig. 2 is a transverse sectional view taken on the line 2-2 of Fig. 1. and Fig. 3 is an enlarged sectional view taken on the line 3-3 of Fig. 2.

Reference being had to the drawings. it may be seen that I have illustrated a buildthrough a chilled fluid and therea room structure 1927. Serial No. 180,389.

ing structure forming a chamber and that I have. shown in assoclation therewith an appliance for carrying out the objects above noted. Embodied in said building structure is a floor 10, end walls 11 and 12, side walls 13 and ceiling 14 forming a chamber A. Midway of the floor 10 and extending substantially from end to end of the chamber A is a narrow tank B the upper edges of the sides 15 thereof merging into the floor 10. One extremity of said tank B is closed by the end wall 12 of the building structure, the other extremity thereof being closed by a wall 16 merging at its upper edge into the floor 10. Said wall 16 is spaced slightly inwardly of the end wall 11 of the building structure to provide a ledge-like floor portion 17 to accommodate a blower 18 which will be more fully hereinafter explained. The structure is provided with a false floor C including spaced timbers 19 extending across the floor 10 transversely of the tan B and also including spaced flooring strips 19 laid on said timbers transversely thereof. The tank B is adapted to contain a suitable refrigerating liquid, preferably brine. Arranged within the tank B, beneath the normal liquid level therein, I employ piping for a suitable circulating refrigerant, a pipe or pipes 20 being bent or fabricated to form a number of tiers of coils or turns as best seen in Fig. 2. Also arranged within the tank are a number of air pipes 21, one for each tier of refrigerant plpes 20, each air pipe 21 being arran ed directly beneath its respective tier of re rigeraut piping. These air pipes 21 are open along the lengths thereof for the egress of air therefrom, narrow slots 22 being cut in the upper sides of said pipes for that purpose. All of the air pipes 21 are connected with a delivery pipe 23 extending upward from the Botton of tank B to the discharge outlet of a blower 18 restin on the ledge-like floor portion 17. A fee conduit 24 extending from one side of the blower housing upwardl along the end wall 11 terminates in a 'reacli or branch conduit 24' disposed over the ceiling of the chamber A directly over the tank B, said branch conduit 24 aving a slot 24" in its upper side extending the full length thereof. Another feed conduit 25, leading to the blower 18, extends through the end wall 11 of the building structure and provides for the introduction of fresh air to the blower 18. A third conduit 26 for the egress of air from the chamber A leads through the end wall 11 from a point in the upper portion of chamber Atothe outer atmosphere. The feed conduits 24 and 25 are respectively fitted with dampers 27 and 28 and the third or exhaust conduit 26 is fitted with a damper 29.

In use, the blower 18 is put into operation. \Vith the dampers 28 and 29 in conduits 25 and 26 closed and damper 27 in conduit 24 open, air is drawn from the upper portion of the chamber A through conduit 24 and its branch 24: to the blower 18, whence it is impelled through delivery pipe 23' to the air pipes 21. The head built up by the blower 18 is sufficient to force the air through the slots 22 in air pipes 21 against the pressure of the refrigerating liquid in the tank B. The air issuing from the pipes 21 rises in the refrigerating liquid in the form of bubbles wiping the tiers of turns in piping 20 and becoming chilled by contact with the liquid and with said piping. Ascending from the liquid in the tank B, this chilled air spreads out in the space between the floor proper 10 and false floor C, thence issuesint-o the chamber proper through the' restricted spaces between the flooring slats 19*, thus establishing a uniform diffusion of the conditioned air within the chamber A. Rising naturally along the relatively warm walls of the chamber and about the relatively warm lading housed therein, the air is stimulated in its ascent by suction created at the ceiling of the chamber along branch duct 24 and finally enters said branch duct to begin its cycle anew. chamber, dampers 28 and 29 in conduits 25 and 26am 0 ened, more or less, as required, whereupon phere is mixed with the air entering the blower 18 through conduit 24 and air from the upper portion of the chamber is expelled therefrom through conduit 26 into the outer atmosphere. If certain conditions render it advisable to dispense with re-circulating air in the chamber A. damper 27 in conduit 24 ma be closed, whereupon all of the air entermg the lower portion of the chamber from tank B will come from the outer atmosphere through conduit 25, and an equal amount of air will be expelled from the upper portion of chamber through conduit 26.

The air rising in the liquid in tank B is effectively refrigerated due to its contact with the refrigerant piping and with the liquid which is caused by said air to be agitated about said piping.

Changes in the specific form of my invenfrom the outer atmosphere.

When it is desired to ventilate the resh air from the outer atmos means permitting of the escape 0 tion, as herein disclosed, may be made-within the scope of what is claimed without departing from the spirit of my invention.

Having described my invention, what I claim as new and desire to protect by Letters Patent is:

1. In combination, a structure forming a chamber, an elongated tank located in the floor of the structure centrally thereof, said tank being adapted to contain a non-freezing fluid, tiers of coiled pipe within the tank for a circulating refri erant, air pipes in the tank, one air pipe or each tier of refrigerant pipe, each air pipe being open along the length thereof for the egress of air therefrom and located directly beneath its respective tier, a blower discharging into said air pipes, a re-circulating conduit for feeding air to'said blower, said conduit having an intake branch near the ceiling of the chamber disposed in parallelism with said tank directly over the same, said branch having a longitudinal slot in its upper side, a damper in said conduit, an air ingress conduit leading from the outer atmosphere to said blower, a damper in said ingress conduit, an air egress conduit leading from the upper portion of the chamber to the outer atmosphere, and a damper in said conduit.

2. In combination, astructure forming a chamber, a tank for a refrigerating fluid arranged in the lower portion of said chamber. pipes for a circulating refrigerant located within the tank, air pipes located within said tank beneath said refrigerant pipes, said air pipes being open along the length thereof or the egress of air therefrom,-a blower dischargin into said air pipes, a conduit communicating at one end thereof with said blower to feed air thereto, said conduit opening at the other end thereof near the ceiling of said chamber.

3. In combination, a structure forming a chamber, a tank for a refrigerating fluid arranged-in the lower portion of said chamber, pipes for a circulating refrigerant located within the tank, air pipes located within said tank beneath said refrigerant pipes, said air pipes being open along the length thereof for the egress of air therefrom, a blower discharging into said air pipes, a conduit commumcatin at one end thereof with said blower to eed air thereto, said conduit opening at the other end thereof near the ceiling of said chamber, means for introducing air to the blower from the outer atmos here, and

air from the upper portion of the chamber to the outer atmosphere.

4. n combination, a structure forming a chamber, a tank for a refrigerating fluid arranged in the lower portion of the chamber, a pipe for a refrigerant located'within the tank, an air pipe open along the length thereof for the egress of air therefrom, said air and . chamber, a tank for a pipe being also located within the tank and disposed beneath said refrigerant pipe, a blower discharging into said air pipe, a recirculating conduit for feeding air to said blower, said conduit having a branch near the ceiling of the chamber formed with an air inlet opening therein.

n combination, a structure forming a chamber, a tank for a refrigerating fluid, arranged in the lower portion of the chamber, a pipe for a refrigerant-located within the tank, an air pipe open along the length thereof for the egress of air therefrom, said air pipe being also located within the tank and disposed beneath said refrigerant pipe, a blower discharging into said air pipe, a recirculating conduit for feeding air to said blower, said conduit having a branch near the ceiling of the chamber formedwith an air inlet opening therein, means for introducing air to the blower from the outer atmosphere, and means permitting of the escape of air from the upper portion of the chamber to the outer atmosphere.

6. In combination, a structure forming a chamber, a tank for a refrigerating liquid arranged in the lower portion of the chamber centrallylongitudinally thereof, an air pipe opening into the liquid in said tank along the length thereof, a blower dischar ing into said air pipe, and a feed conduit lea ing from the upper portion of the chamber centrally along the length thereof to said blower.

7. In combination, astructure forming a refrigerating liquid arranged in the lower portion of the chamber, means for refrigerating the liquid within said tank, an air pipe opening into said tank near the bottom thereof, a blower discharging into said air pipe, a conduit communicating at one end thereof with said blower for feeding air thereto. said conduit openin at its other end near the ceiling of the cham 1', means for introducing air to the blower from the outer atmos here and means permitting of the escape of air from the upper portion of the chamber to the outer atmos here.

8. In combination, a structure ibrming a chamber. a tank for a refrigerating liquid arranged in the lower portion of the chamher, an air pipe opening into said tank near the bottom thereof, a blower discharging into said air pi e, a valved feed conduit extending from t e upper portion of the chamber to said blower. a valved feed conduit leadin to the blower from the outer atmosphere and a valved egress conduit leading. from the upper portion of the chamber to the outer at m'osphere.

9. In combination, a structure forming a chamber, a tank for a refrigerating liquid arranged in the lower portion of said chamber, an air pipe opening into the liquid in said tank, a blower for discharging air into said pipe, a feed conduit leading to the blower from the outer atmosphere and an exhaust conduit leading from the upper portion of the chamber to the outer atmosphere.

10. In combination,a structure forming a chamber, a relatively narrow 'rece tacle for an air conditioning medium extending along the lower portion of the chamber longitudinally thereof, means for blowing air into said receptacle along the bottom thereof, and a false floor for said chamber extending from side to side thereof and disposed over said receptacle and having restricted openings therein for the passage therethrough of conditioned air from said receptacle, said floor serving to establish a uniform diffusion of the conditioned air entering the chamber proper.

11. In combination, a structure forming a chamber, a receptacle for an air conditioning liquid arranged in the lower portion of the chamber, means for afl'ecting the temperature of said liquid, an air pipe leading into and along the bottom of the receptacle and exhausting into the liquid therein, and a blower discharging into said air pipe, said blower having an air intake opening in communication with the interior of the chamber.

12. In combination, a structure formin a chamber, a] relatively narrow reee tacle or an air conditioning medium exten ing along the lower portion of the chamber, longitudinally centrally thereof, an air pipe opening into said receptacle, a blower dischar 'ng into said air pipe, and a feed conduit lea ing from the upper portion of the chamber centrally along the length thereof to said blower.

In testimony whereof, I have signed my name to this specification.

CHARLES A. MOORE. 

